Malicious PDF — malware analysis report

Static analysis result for SHA-256 d960bdf966358319…

MALICIOUS

PDF

42.6 KB Created: 2020-11-08 23:07:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 7d270e085a670c9806234d4562882bde SHA-1: c18a51af31d679f6324c725289f1744288e7af72 SHA-256: d960bdf96635831906cf09f9160afdb865a25fd733fe15b06971564e8d6b584a
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://trafftec.ru/aws?keyword=premiere+pro+cracked+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4378165/normal_5f8ce0aa7cbf1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420441/normal_5f9fce744aa76.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446036/normal_5fa2f4238a8e2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387430/normal_5f90abed06b44.pdfIn PDF document text
    • https://tibiwurab.weebly.com/uploads/1/3/2/6/132695994/675e2f91841c5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/drivers_ed_chapter_12_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/fodose/wurexotinosaxobi.pdfIn PDF document text
    • https://s3.amazonaws.com/gaxuremewuger/kabupiranefuta.pdfIn PDF document text
    • https://s3.amazonaws.com/rujabepifar/donuxisigonikagab.pdfIn PDF document text
    • https://s3.amazonaws.com/kozibowisenatu/43998966039.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/bibliografia_con_normas_apa.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzaganog/hyatt_tysons_corner_club_lounge.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006645.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6645 5196 bytes
SHA-256: 062c231a2e8b5c7cf8d8830efab33c01eaa3678358baf8f6ab3c505b22d56202
font_01_sfnt_off000077eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77EB 10984 bytes
SHA-256: e1f7c4b34978e5983f22a1f59ae101634dca963e1c9962bfa602d78d8e09a1c8